1. LIU Critical Key activities in Long Shutdown 1 (2013) LIU-PSB: assuming LINAC4 connection in LS2 –Beam dump consolidation If not done: operation will be performed with obsolete dump and without spare –Transport and handling equipment consolidation If not done: Not ready for heavy work in LS2 LIU-PS: –Shielding of Route Goward and SS16 Not done: would block the access to PS ring center in LS2 –To note: most components installation planned in LS2 LIU-SPS: –aC coating of 1 full SPS sextant: 3.0 missing FTE (1 TE/VSC, 2 TE/MSC) plus transport, SU & FSU Not done: no full-scale validation of ecloud mitigation, 6 sextants in LS2 –Preparation for RF 200 MHz upgrade Not done: Not ready for 2018 installation R.Garoby,S.Gilardoni,B.Goddard,K.Hanke,M.Meddahi,M.Vretenar

2. LIU Less critical Key activities in Long Shutdown 1 (2013) LIU-PSB: assuming LINAC4 connection in LS2 –Beam stopper upgrade If not done: issue for 2 GeV beam (O.K. for LINAC2 operation until LS2) –Magnets incl. modification to the main unit cooling circuit If not done: will have to done in addition to heavy work load in LS2 –Change several transfer line magnets If not done, more work load in LS2 LIU-PS: –Low energy magnet replacement: no resource conflict with LHC, but possible exchange of main bus-bars in conflict with the interventions Can postpone to LS2 –Shielding of top of SMH16 Can postpone to LS2 –Renovation – consolidation activities R.Garoby,S.Gilardoni,B.Goddard,K.Hanke,M.Meddahi,M.Vretenar

3. LIU Less critical Key activities in Long Shutdown 1 (2013) LIU-SPS: –Relocate damper Can postpone to LS2 but increases LS2 parallel activities with 200 MHz, and increases minimum length of LS2 for SPS (10 months?) –BLM and MOPOS upgrades Can postpone to LS2 but new BI functionality not available for operation in years 2014-2016 –MKE impedance reduction Can postpone until 14/15 stop, but machine impedance stays higher, and will continue to have operational limitations with MKE heating until 2015 –MKDV/H impedance reduction Can postpone until LS2 but machine impedance stays higher R.Garoby,S.Gilardoni,B.Goddard,K.Hanke,M.Meddahi,M.Vretenar

4. Supporting materials

5. Linac4 in 2013/14 (LS1) 5 The “official” MTP schedule foresee the beam commissioning of Linac4 during LS1 (January- April 2014) (motivations: optimum use of resources, Linac4 available as backup for Linac2 from the start of 2014 run). Present milestones: - April 2013: end of 3 MeV Test Stand reinstallation at Linac4, start 3 MeV beam; - July 2013: beam commissioning at 10 MeV (DTL Tank1); - September 2013: beam commissioning at 50 MeV (DTL); - November/December 2013: beam commissioning at 100 MeV (CCDTL); - March 2014: beam commissioning at 160 MeV (PIMS). Activities in 2013/14 and required resources: - Machine installation ~ 6 months: transport (2 FTE), vacuum (1 FTE). - Hardware tests ~ 3 months: support groups (RF 3 FTE, EPC 2 FTE, CO 1 FTE). - Beam commissioning ~ 6 months: commissioning team (mainly ABP, RF, OP, BI): 6-8 FTE + fellows and visitors.

6. Linac4 commissioning schedule 6 Start of beam commissioning (3MeV): May 2013 End of beam commissioning (160 MeV): April 2014 (version November 2010) 5 commissioning stages: (on intermediate dumps) 3 MeV10 MeV50 MeV100 MeV160 MeV In 2013/14 (15 months), 6 months of beam commissioning, 3 months of HW tests, 6 months of installation

7. nature of workgroup(s) involvedconsequences if not done consolidate beam dumpEN/STIcontinue running with obsolete dump, and without spare upgrade beam stopper BTP.STP10 EN/STIOK for operation with Linac2; postpone to LS2 Fluka studiesfellow3 months engineer1 month Conceptual designfellow3 months engineer2 months Design new dumpdesign office5 months technician3 months engineer2 months Manufacture new dumptechnician6 months (+ 2 months FSU) engineer1 month Install new dumptechnician2 weeks Fluka studiesfellow3 months engineer1 month Check actual design for 2 GeVfellow2 months engineer2 months Design BTP beam stopperdesign office5 months technician3 months engineer2 months Manufacture BTP beam stoppertechnician5 months (+ 6 weeks FSU) engineer1 month Install BTP beam stoppertechnician2 weeks manpower estimate dumpmanpower estimate beam stopper LIU-PSB Work - LS1

8. nature of workgroup(s) involvedconsequences if not done consolidate transport & handling equipment EN/HEwill not to be ready in time for heavy work during LS2 Lift AS 045FTE0.2 Transfer tables CH 066 and CH 067 FTE 0.2 Cranes PR 134, 135, 136 and 137 - 10t FTE 0.2 Crane PR 138 - 20t FTE 0.1 Transport and handling studies FTE 0.1 Transport and handling services FTE 0.2 manpower estimate transport & handling equipment LIU-PSB Work - LS1

9. LIU-PSB Work – LS2 nature of workgroup(s) involved manpower required all other work according to WBS according to WBS in case the work presently planned for LS1 will not be done in LS1, it will add on to the workload for LS2. Most important is the handling equipment, which must be ready in time for the other activities in LS2, otherwise delays are to be expected important notice: this assumes Linac4 connection in LS2 (present official planning) in case Linac4 connection in LS1 should be decided, a lot of items to be added to the list for LS1

10. PS activities for LS1 S. Gilardoni, H. Damerau for PS-LIU

11. Works foreseen for LS1: magnets (tunnel work) Low energy magnet replacement: – Orbit correctors – Trim quadrupoles – Skew quadrupoles Definitive list of magnets to be replaced: pending results of MDs Magnet exchanges not in conflict with LHC interventions in terms of resources Possible exchange of main bus-bars in conflict with the interventions Work could be postponed during LS2

12. Works foreseen for LS1: civil engineering R.te Goward: increase of the shielding should be done during the LS1 to avoid interference with the LS2 upgrade work: route is the only access to the center of the ring. Shielding on top of SMH16: study should be started this year, not clear if can be done during LS1

13. Comment on PS-upgrade Not many activities in the tunnel foreseen during LS1 because: – Upgrade studies recently started: studies still to be done to decide equipment/solution to be applied (eg. LL/HL RF) – the technical design of many components remains to be made, even if choice already done (eg. Injection elements will be ready only for LS2) Many activities are outside the tunnel, like: – renovation/consolidation of power converters Most of activities concentrated during LS2.

14. LIU-SPS planning – provisional LS1 / LS2 BLM, BPM MKE/MKDV/H aC 1 sextant  3 FTE (missing) TE/VSC – MSC + Transport, SU, FSU VALIDATION for LS2 aC 5 sextants RF 200 MHz LSS3 RF 200 MHz preparation RF 200 MHZ building Most critical items

15. MTP input – v1.0 Manpower

16. Manpower estimates MKE, MKDV/H, transverse damper all require punctual transport, vacuum and survey support (few days/weeks) aC coating needs more substantial survey support (maybe 1 month), and continuous transport support (duration ~3 months) These are estimates of what is required, NOT what is available. Note also that for aC coating, 3 FTEs means 12 people for 3 months Presently NO resources from VSC and MSC allocated to aC coating in LS1, so postponing activity to LS2 does not save any manpower for LHC. But if aC coating goes ahead in LS1, then manpower must be found.

17. Key activities in Long Shutdown 1 (2013) aC coating of 1 full SPS sextant: 1 sextant –3.0 FTE (1 TE/VSC, 2 TE/MSC) plus transport, SU & FSU –Not done: no full-scale validation of ecloud mitigation, 6 sextants in LS2 Relocate/upgrade of transverse damper and PUs: LSS2 & LSS3 –2.0 FTE (BE/RF) plus transport, SU, VSC, plus FSU –Not done: damper upgrade postponed until 2018 Preparation for RF 200 MHz upgrade: LSS3 –4.0 FTE (2.5 BE/RF, 1.5 GS & EN) plus FSU –Not done: RF 200 MHz upgrade not ready for 2018 BLM and MOPOS upgrades (electronics): full ring –3.0 FTE (BE/BI) plus FSU –Not done: BLM and MOPOS upgrades postponed until 2015 Impedance reduction 1 MKE magnet: LSS4 –0.5 FTE (TE/ABT) plus punctual transport, SU & VSC, plus FSU –Not done: MKE impedance reduction not completed until 2015 Modification of MKDVs (impedance): LSS1 –0.5 FTE (TE/ABT) plus punctual transport, SU & VSC, plus FSU –Not done: MKDV/H impedance reduction postponed until 2018 (needs LS)

18. Implications of postponing work – aC coating aC coating: high priority to do 1 sextant in LS1 –Get one sextant finished –Time frame (1 sextant in 15 months) will allow process to be perfected –Reduce load in LS2 to 5 sextants, with tested logistics and process –Allow beam/vacuum/ecloud measurements in SPS between LS1 and LS2 for treatment validation –Do not treat all machine in one go (in case of problems, easier to reverse...) If not done in LS1: –High pressure with “untried” process and logistics in LS2 –6 sextants to treat in LS2 – even more difficult than 5 –No operational experience on large scale before full deployment –Higher risk of problems, delays –Much less reversible in case of problems

19. Implications of postponing work – other WPs Relocate damper –Can postpone to LS2 but increases LS2 parallel activities with 200 MHz, and increases minimum length of LS2 for SPS (10 months?) Preparation for RF 200 MHz upgrade –Cannot postpone – otherwise not ready for 2018 installation window BLM and MOPOS upgrades –Can postpone to LS2 but new BI functionality not available for operation in years 2014-2016 MKE impedance reduction –Can postpone until 14/15 stp, but machine impedance stays higher, and will continue to have operational limitations with MKE heating until 2015 MKDV/H impedance reduction –Can postpone until LS2 but machine impedance stays higher